Page List Block acting up

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Hello,

We have a page list block on our homepage (quarterlyhelps.arpbookstore.com) that is acting up. I have cleared the cache in an attempt to reset it, but it still isn't working.

We use this page list to show all of our blog posts.

Here's what is happening:
The block often gets stuck on one pagination (generally page 4) and no matter what I do (go back to the home page, click previous/next, click the other numbers) the block never changes.
Sometimes it will load correctly, but if you interact with it it jumps to page 4 and gets stuck again.

This block functions correctly in the admin mode.

I am using the Elemental theme and no custom template or anything with the page list block.

Thanks for the help!